I've just fitted a new kitchen. At my wife's insistence, I got a man in
> to do the worktop. Where two pieces of worktop join at right angles he
> made a join using a router and jig. This was the bit my wife didn't
> trust me to do. However, it's started lifting very slightly as if water
> has got into the chipboard worktop.
>
> If I get him back in, is there anything he can do?
>
> Is there anything I should/could do?
>
> Have I been doing something wrong - shouldn't the join withstand water? >
The big question is what did he do to waterproof it.